A Piggyback resistive Micromegas

TL;DR

This paper introduces a new resistive Micromegas detector with a capacitive coupling readout architecture that offers high gain, good resolution, and spark protection, compatible with pixel ASICs.

Contribution

It presents a novel resistive layer design separated from the readout, enabling flexible pixel arrangements and improved spark protection in Micromegas detectors.

Findings

High gas gain achieved

Good energy resolution demonstrated

Effective spark protection provided

Abstract

A novel read-out architecture has been developed for the Micromegas detector. The anode element is made of a resistive layer on a ceramic substrate. The detector part is entirely separated from the read-out element. Without significant loss, signals are transmitted by capacitive coupling to the read-out pads. The detector provides high gas gain, good energy resolution and the resistive layer assures spark protection to the electronics. This assembly could be combined with modern pixel array electronic ASICs. This readout organization is free on how the pixels are designed, arranged and connected. We present first results taken with a MediPix read-out chip.